Do you mean that the number of exchanges will continue to grow, so that we can buy Bitcoin on any exchange we want?
Actually we don't need too many exchanges to invest in crypto. What we have prepared is a list of local exchanges where we make deposits and withdrawals, then international exchanges where we trade.
But why also the number of exchanges continues to grow? Because the number of crypto developed also continues to grow. In general, everyone likes Bitcoin, but not everyone invests in Bitcoin. So the coins that are liked by someone are only available on certain exchanges.